The disease results in immunopathology of anagen hair follicles.
Clinical signs including alopecia, skin hyperpigmentation and leucotrichia usually developing on the face, skull, ears and legs, which progresses to involve the neck and trunk. underlying skin appears normal and pruritus is not a feature of this condition.
A differential diagnosis would include folliculitis.
Histological examination of skin biopsy specimens revealed peri- and intrabulbar mononuclear cell infiltrates affecting almost exclusively anagen
Spontaneous remission of alopecia occurs in about 60% of dogs and regrowing hair shafts were often non-pigmented.
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